Feature: 1. Upgraded Technology: Using updated liner technology, ultra quiet operation, super large air volume, and can even drive 4 nano sand tables. 2. Power Failure Automatic Start: AC power supply, power failure automatic start, the surface is high gloss painting, colorful. 3. Adjustable: Aquarium air pump adopts multi position potentiometer knob adjustment, which can adjust the air volume at any time, which is easy to use. 4. Accessories: With four nano air discs, two tees and one air tube, it can be directly installed and connected for use. The super air disc has more air bubbles. 5. Scope of Application: Fish tank air pump is suitable for fishing, fish ponds, seafood ponds, and the use environment is more free. Specification: Item Type: Aquarium Oxygen Pump Material: ABS Use: Fish Tank Large Air Volume Oxygen Pump Maximum Air Volume: >2 x 10L/Min Maximum Air Pressure: 30Kpa Rated Power: 5.5W. Package List: 1 x Air Pump1 x Instruction Manual2 x Red Check Valve4 x Air Disc4 x Suction Cup4 x Regulating Valve4 x Transparent Check Valve2 x Tee1 x Air Pipe